adj.不诚实的，不正当的，不道德的，不合适的，不适当的，不得体的，错误的，不正确的

He committed an improper use of company funds, which led to his termination.
他犯了滥用公司资金的不当行为，因此被解雇。
The children were dressed in improper attire for the formal event.
孩子们穿得不适当，不适合正式场合。
She made an improper comment about her boss in front of everyone.
她在众人面前对老板说了不得体的话。
His actions were deemed improper by the disciplinary committee.
纪律委员会认为他的行为不当。
The medicine should be taken in proper dosage, not in excess.
药物应按照适当的剂量服用，不可过量。
The dog was barking in an improper manner, disturbing the neighbors.
狗叫的方式不合适，打扰了邻居。
She handled the situation in an improper way, causing unnecessary conflict.
她处理问题的方式不当，引发了不必要的冲突。
Proper identification is required for entry into the restricted area.
进入限制区域需要出示适当的身份证件。
His driving was considered improper due to frequent speeding violations.
由于频繁超速，他的驾驶方式被认为是不恰当的。
The restaurant refused to serve alcohol to someone who appeared under the influence of drugs, as it's their policy to maintain propriety.
餐厅拒绝向疑似吸毒的人提供酒精饮料，这是他们保持适当的规定。